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2130202013 = 16931258241
BaseRepresentation
bin111111011111000…
…0100110110011101
312111110100110210212
41332332010312131
513330312431023
6551213342205
7103534263332
oct17676046635
95443313725
102130202013
119a3497335
124b5497965
1327c433a84
14162cac989
15c7030e78
hex7ef84d9d

2130202013 has 4 divisors (see below), whose sum is σ = 2131461948. Its totient is φ = 2128942080.

The previous prime is 2130201991. The next prime is 2130202031. The reversal of 2130202013 is 3102020312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1661133049 + 469068964 = 40757^2 + 21658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2130202013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130202033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627428 + ... + 630813.

It is an arithmetic number, because the mean of its divisors is an integer number (532865487).

Almost surely, 22130202013 is an apocalyptic number.

It is an amenable number.

2130202013 is a deficient number, since it is larger than the sum of its proper divisors (1259935).

2130202013 is a wasteful number, since it uses less digits than its factorization.

2130202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259934.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2130202013 is about 46154.1115503267. Note that the first 3 decimals coincide. The cubic root of 2130202013 is about 1286.6890259462.

Adding to 2130202013 its reverse (3102020312), we get a palindrome (5232222325).

The spelling of 2130202013 in words is "two billion, one hundred thirty million, two hundred two thousand, thirteen".

Divisors: 1 1693 1258241 2130202013